USN-4957-1: DjVuLibre vulnerabilities

Releases

• Ubuntu 21.04
• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• djvulibre - DjVu image format library and tools

Details

It was discovered that DjVuLibre incorrectly handled certain memory
operations. If a user or automated system were tricked into processing a
specially crafted DjVu file, a remote attacker could cause applications
to hang or crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.04

• libdjvulibre21 - 3.5.28-1ubuntu0.1

Ubuntu 20.10

• libdjvulibre21 - 3.5.27.1-15ubuntu0.1

Ubuntu 20.04

• libdjvulibre21 - 3.5.27.1-14ubuntu0.1

Ubuntu 18.04

• libdjvulibre21 - 3.5.27.1-8ubuntu0.3

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2021-32493
• CVE-2021-32490
• CVE-2021-3500
• CVE-2021-32492
• CVE-2021-32491

Related notices

• USN-4957-2: djvulibre-bin, libdjvulibre-dev, djview, libdjvulibre-text, libdjvulibre21, djvuserve, djview3, djvulibre-desktop, djvulibre